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Finding the Fourth Proportional to 11,759.39, 17,639.09 and 3,968.21

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Solution

The fourth proportional to 11,759.39, 17,639.09 and 3,968.21 is: 5,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,759.39 : 17,639.09 = 3,968.21 : x
  2. Step 2: Convert to fraction form
    11,759.39/17,639.09 = 3,968.21/x
  3. Step 3: Cross multiply
    11,759.39x = 17,639.09 × 3,968.21
  4. Step 4: Simplify right side
    11,759.39x = 69,995,505.29
  5. Step 5: Solve for x
    x = 69,995,505.29/11,759.39
  6. Step 6: Final answer
    x = 5,952.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.